:root {
    --primary-color: #3f51b5;
    --primary-light: #757de8;
    --primary-dark: #002984;
    --secondary-color: #ff4081;
    --text-primary: #212121;
    --text-secondary: #757575;
    --background: #f5f5f5;
    --card-bg: #ffffff;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.app-header {
    text-align: center;
    margin-bottom: 40px;
    padding: 20px 0;
}

.app-header h1 {
    color: var(--primary-color);
    font-weight: 300;
    font-size: 2.5rem;
}

.tiles-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    padding: 20px 0;
}

.tile {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 30px 20px;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.5, 1);
    box-shadow: var(--shadow);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.tile::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-light), var(--primary-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.tile:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.tile:hover::before {
    transform: scaleX(1);
}

.tile-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: rgba(63, 81, 181, 0.1);
    transition: background-color 0.3s ease;
}

.tile:hover .tile-icon {
    background-color: rgba(63, 81, 181, 0.2);
}

.tile-icon img {
    width: 48px;
    height: 48px;
    filter: grayscale(1) brightness(0);
    opacity: 0.7;
}

.tile-title {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 10px;
    font-size: 1.3rem;
}

.tile-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 300;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .tiles-container {
        grid-template-columns: 1fr;
    }

    .app-header h1 {
        font-size: 2rem;
    }
}